if(HTMLElement.prototype.insertAdjacentHTML == undefined) {
    HTMLElement.prototype.insertAdjacentElement = function(where, node) {
        switch (where) {
            case "beforeBegin":
                this.parentNode.insertBefore(node, this);break;
            case "afterBegin":
                this.insertBefore(node, this.firstChild);break;
            case "beforeEnd":
                this.appendChild(node);break;
            case "afterEnd":
                if (this.nextSibling)
                    this.parentNode.insertBefore(node, this.nextSibling);
                else
                    this.parentNode.appendChild(node);
                break;
        }
    }
    HTMLElement.prototype.insertAdjacentHTML = function(where, html) {
        var r = this.ownerDocument.createRange();
        r.setStartBefore(this);
        var parsedHTML = r.createContextualFragment(html);
        this.insertAdjacentElement(where, parsedHTML);
    }
    HTMLElement.prototype.insertAdjacentText = function(where, txt) {
        var parsedText = document.createTextNode(txt);
        this.insertAdjacentElement(where, parsedText);
    }
}